Oracle SQL Developer and Data Modeler are becoming more and more popular as they are both cost-free and available on many Operating Systems (Linux/Unix,Windows and Mac) with different installation types: "This zip does not include JRE" or "This zip file includes the JRE". On linux, the choice is limited because the only version available doesn't include Java Runtime Environment. And it's an RPM !! So what... In this post I will provide all information required to install and run these tools on an Ubuntu machine.

A few days ago I downloaded the Cloud Control 12c binaries for Linux x86_64 from Oracle Technet. My friend Hervé Schweitzer, configured an OEL 5.7 VM for test purposes and I was quite eager to install this new software. I checked the OS settings, the required parameters, etc. - everything was fine. My OMS repository database (11.2.0.3) was ready. Unfortunately, as soon as I started the installer, it directly crashed.

Last week at a customer site, we experienced an excessive redo log generation rapidly filling up the FRA (Flash/Fast Recovery Area) with archivelog files. This eventually caused the database to crash.

Dans un environnement Oracle cluster 11g R2, le listener ne peut pas démarrer avec une erreur sur la définition de nom "locahost" défini dans le fichier /etc/hosts.

The Metalink note 949858.1 describes problems with 10.2.0.5 agents monitoring 11g databases - this might be the case if you have an "old" 10.2.0.5 Grid Infrastructure you did not want to upgrade yet. The 11g databases are generating errors in both the alert.log and the log.xml file. The agent 10.2.0.5 agent seems to have problem with this. This posting will show you what to do.